Hadith No: 2
Ibn Abi Shaibah - Al-Kitab Al-Musannaf fi al-Ahadith wal-Athar
Book of Virtues - What has been narrated about Al-Hasan and Al-Husayn (peace be upon them)
Volume: (6) - Page Number: (378)
32177 - Zayd ibn Hubab narrated to us, from Isra'il, from Maysarah al-Nahdi, from al-Nu'man ibn Amr, from Zur ibn Hubaysh, from Hudhayfah, who said: "I went to the Prophet (peace be upon him) and prayed with him the Maghrib prayer, and then he stood up to pray until he prayed the Isha prayer. Then he came out, and I followed him.
He said: 'An angel appeared to me and requested permission from his Lord to greet me and give me glad tidings that Al-Hasan and Al-Husayn are the leaders of the youth of the people of Paradise.'"